| 摘要 |
A method of telecommunication systems that can be accessed via an unlicensed-radio access network, and is particularly, but not exclusively, related to the authorisation and registration of a mobile terminal via unlicensed radio access networks. Embodiments of the present invention provide a method of authenticating a request for access to a telecommunications system which involves App 10 receiving at least two messages: a registration request, and a predetermined message (such as an SMS with token details). The App 10 receives a registration request message from the mobile station (S2.2), and transmits a rejection message in response to the receipt of the registration request message (S2.5), without referring to any subscriber specific records. Further, once the App 10 has received the registration request the App 10 checks the registration request in step S2.3 and stores (S2.4) an identifier relating to the mobile station from which the registration request came. When the App 10 receives a predetermined message from a network node (S4.1), the App 10 determines whether an identity in the message matches the stored identifier (S4.2 and S4.3). If it does, the App 10 completes the authentication of the mobile station, by sending a message to permit registration (S4.4). |
